Litt om VPT:The software, built in max/msp with jitter from cycling74, is made to work for both max osX and windows xp/vista. It works with 16 layers of video which can be placed in a 3D space (openGL). Each layer can be scaled, positioned, rotated, distorted, tinted and masked individually, and accept quicktime video files, live camera feed and a live drawing tool as sources.